AFAIK the only font that comes close to this handwritten look is Max Keenlyside's "Rodgers & Hammerstein" font (Download: http://www.maxpiano.ca/Handwritten.zip ). But R&H doesn't look so elegant, it's more the handwritten Broadway scores style that it tries to imitate.
The text font ("Magnus") is probably identical though.

There were two threads on Facebook's Music Engraving Tips recently about "beauty or not beauty" of handwritten fonts in typeset music.
Your font is definitely an enrichment.